[llvm-dev] [VSXFMAMutate] OldFMAReg may be wrongly rewritten

[Tim Shen via llvm-dev]

On Thu, Mar 24, 2016 at 6:16 PM Tim Shen <timshen at google.com> wrote:

> I tried to bridge PPC backend and commuteInstruction, not sure if
> correctly, but here I got some non-optimal results: in 12 differences, 8 of
> them are improvements, but 3 of them are regressions.
>

The comparison is between VSXFMAMutate(with TwoAddress not supporting PPC)
and TwoAddress's commuteInstruction(with VSXFMAMutate disabled).
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160325/b95f162f/attachment.html>